Gas-regulator.



J. HARRIS GAS REGULATOR APPUCATIOH F Patented NM. 5, 1918,

1o This invention relates'to a regulator for various working pressure. Anot :10 prevented from entering sure regu UNITED STATES PATENT OFFICE.

JOHN HARRIS, OF LAKEWOOD, OHIO, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE HARRIS CALORIFIC COMPANY, 01: CLEVELAND, OHIO, A CORPOBATIUN OF OHIO.

GAS-BEGULATOR 1,283,508. specification 0f Letters latvnt ed N ov. 5, 1918.

Application filed April 5, 1917. Serial No. 159,894. To all whom it may concern: right angles to Fig. 1 Fig. t a sectional Be it known that I, JOHN HARRIS, a citi view mrresponding to the line 4-4 of Fig. .,zcn of the'United States, residing at Lake- 2 looking in the direction of the :U'IOWS" wood, in the county of Cuyahoga and State Figs. 5 and 6 are details in perspective oi 5 of Ohio, have invented a certain new and the check valve in the inlet and outlet conuseful Improvement in Gas-Regulators, oi nections of the regulator; and Fig. Tel

which the following isfla full, clear, andtional detail of said valve corrcspoinling to exact description, reference being bad to thelinej-Tof Fig. 4. the accompanying draw Describing by reference chm-actors the parts illustrated herein, 1. denotes a 6.) gases and more. particularly to a regulator supply'tank which may contain any gas the of the type employed in connection with pressure whereof is to be regulated, as oxythe oxygen and combustible gases used with gen or combustible gases. This tank is pro cutting and welding torches; One of the vided at its upper end with the usual valve 2 15 objects of my invention is to provide a reg and easing 2" whereby the flow of gas from ulator which may be conveniently adjusted the tank to the outlet connection 3 through for any desired working pressure at the dethe casing 2 may be controlled or cut oil, as livery side thereof and which when so addesired It will be observed that the conjusted will automatically maintain such nection 3 is threaded at its outer end and her object of the is preferably cupped (not shown) for the invention is to provide a regulator wherein reception of the adjacent end 4 of the regthe diaphragm as well as the gage or gages ulator connection 4. It will be understood connected therewith will be protected from that the cupped end'ot the connection 3, as rupture through sudden inflow of gas under is usual, is so shaped tlS'r'tO form a tight joint hereinto. Another object of with the end 4* of the connection 4; The

25 high pressure t the nvention is to provide a re ulator with connections 3 and 4 are united by means of means whereby gas under hig er pressure a gland nut 5 which is. threaded onto the c from another source (as from an oxygen threaded end of the connection 3 and pmtank or a combustiblefluid tank) will be vided with a shoulder or flange 5 adapted the tank, with to engage a flange 4: on-the connection 4 be connected, as thereby to force the end 4 to its sent in the l The ponnection 4 isprovided suchgas or gases into the regulator itself; I with a bore 4 which extends axially thereof,

' Talso to prevent the transmission of pressure the delivery end of said bore being com 85 to-a. backfire) into the regulator chamtracted, as shown at 4. The bore 4 is on m be! and into the connections leadin therelarged it the receiving end thereof an mo t0 the gages and'to the supply tank. vided in such enlarged art with a thread,

A further object of the invention is to pro indicated at 4*, whi e the outer end vide a r lator wherein an eflicient presprovided with a cylindrical recess for, he-

ation may be accomplished withreception of the head 6 of a nipple (hsaid out danger of freezing due to excessive exnipple being provided with an externally pension ofthe infl'owing gas. Further and threaded portion (5" adapted to be threaded .nerally stated, my invention may be into the threaded portion 4 of the bore and ,defin its-consisting ofthe combinations of with a reduced cylindrical extension, ,6

45 elements illustrated in the drawings formwhich is adapted to fit within' thebore t. ing part hereof and set forth in the claims The nipple 6 is provided with meentral bore ap ehded hereto. In the'drawings, there is 6 and 18 adapted to receive therewithin illustrated one embodimentof my invention, and form a valve-seat for the tapered end 7 Figure" 1 showing in elevation a portion of of the valve 7. 'Ijhis yalve (see Fig; 7) is 60the supply ta k and my regulator applied faced off on opposite sides wherelvt e which the regulator may well as normally preventing the entry of connection 3.

thereto; Fig 2 a'horizontal sectional view sag'eways 7" are provided for the w of gas through the regulator, certain parts being which passes the tapered end of the valve. shown in elevation, the view corresponding At its rear or discharge end, the valve 7 is educed stud 7 which is substantially to the line 2-2 of Fig. 4; Fig. provided with a 65 3 a, sectional View taken at substantially adapted to extendunto the ulterior of a hehcal s ring 8 hearing at one end against the shou der 7 of the valve body, and at its opposite end against the shoulder 4' intermediate the bore 4 and the bore 4.

The delivery end of the connection 4 discharges into the re ulator proper, which will now be described. The regulator comprises a hollow body 9 having one end intcriorly threaded for a cover 10, said cover having an opening 10 in the central portion thereof and an internally threaded ring or flange 10 adapted to receive a cap 11. At its opposite end, the body 9 is provided with an external thread 9 for the reception of a cover 12, said cover having a central hollow projection 12 which is provided with an internally threaded opening at its extreme outer end for the reception of the thread of an adjusting screw 13 having an operating handle 13.

The body 9 is provided with a chamber 9", constituting an extension of the inlet connection an referably formed by casting the walls 9" 0 said chamber therewith. The connection 4 discharges into this chamber, and this chamber communicates directly with a gage 13" which indicates the pressure Within the tank 1 and hence the capacity or contents of said tank at any time. One of the walls 9 of the chamber 9 is provided with a threaded aperture in axialalinement with the opening 10 and whereinto there is threaded a tip 9", said tip having an axial bore 9 through which gas is supplied into the regulator chamber A.

A diaphragm 14 is applied to the threaded end 9 of the body 9 and is clamped thereto by means of the cover 12. This diaphragm is provided with a central bore for the reception of astud 15 having at one end a head 15 which carries a yoke 16, said head bearing against the diaphragm. On the side of the diaphragm opposite the head 15 there is provided a plate 17 having a central sleeve 17 for the stud 15. A helical spring 18 surrounds the sleeve 17 and bears at one end against the plate 17 and at its opposite end against a plate 19 aving a central. depression for the end or the adjusting screw 13.

The yoke 16 straddles the chamber 9" andthe tip 9 and has secured to its ends (as by means of screws 20) a plate 20. This plate has a central bore which is axially arranged with respect to the bore of the tip. he bore through the plate comprises three sec tions of progressivel increasin diameter whereby an annular s oulder 20 is provided with a cylindrical chamber thereabove, the outer or cap-facing end of said bore being threaded, as indicated at 20. In the seat provided b the annular shoulder 20 and the part 0 the bore thereabove, I insert a valve, said valve com risin a metallic casing 21 having a vs. vs b ock 21 therein which is adapted to cooperate with the tip 9'.

This valve is removably held to its seat by means ofaltscrew plu 22 threaded into the bore 20, t'heplug and the valve being ca able of convenient removal and application by mea'fis'of the cap 11. v

Communicating with the enlarged regulatorfchan'iber A which surrounds the chamber 9 is a gage 22 which indicates the ressure of the within the re ulator c amher and within the conduit iieading therefrom to the point of use.

Ext nding from the regulator chamber proper is an outlet connection 23, said outlet connection being cup ed at its delivery end for the reception of the correspondingl shaped end 24 of a hose connection 24, said hose connection being shown as secured in place by means of the gland nut 24 threaded onto the outer end of the connection 23. The connection 23 is provided with a central bore 23 communicating with the regulator chamber by a contracted portion 23. The outer end of the bore 23" is restricted by means of a plug 25 (similar to the plug 6) threaded into the outer end of the connection and having a central bore 25". In the bore 23 there is mounted a valve, indicated generally at 26 and preferably constructed in the same manner as the valve 7. The tapered end 26 of this valve cooperates with the restricted bore 23 and a helical sprin 27 surrounds the stud (not shown) on sai valve, bearing atone end a ainst the shoulder provided about said stu and at its Opposite end against the body of the plug 25. From the connection 24 a hose pipe 28 of usual construction extends to the point of use. Where the regulator is employed with a cutting or welding torch, it will be understood that another tank identical with the tank 1, may be employed and that this tank may be equipped with a regulator identical with the one just described and connected to the cuttin or welding torch by a hose simi: lar to 18%1086 28.

In operation sufficient pressure within the regulator chamber will seat the valve 21 by reason of the pressure exerted upon the diaphragm. In practice, the screw 18 will be adjusted to compress the spring 18 so that the valve 21 will not seat until the desired working ressure,iniieated by the gage 22, is secured? For instance, this pressure may be 50 pounds. By opening the cap 11 and operating the screw 13, the valve 21 may be positioned with reference to the jet 9 so that the valve will close when this pressure, is exceeded. Should it bedesired to vay the working pressure, this variation is e ected by adjusting the screw 13 in the appropriate direction. The valve 21 thus cooperate; with the jet to automatically maintain the desired constant working pressure Within the regulator chamber hose leading to the point of use.

and within. the

Should the valve 2 be closed and the screw 13 be left/in its adjusted working position, the valve 21 may be held from its seal; against the tip SJ. Then if the pressure of gas in the tank 1 should be suddenly admitted into the diaphragm chamber, the. impact of this gas against the diaphragm might rupture the same as well as the gag s, particularlythe gage 22. l'lowevcr, the valve 21 serves as a battle which is interposed between the entering gas, the diaphragm,

and the gage, so that, even if the operator should not unscrew the set screw 13 when shutting ott' the valve 2, and should subsequently open the latter valve, the diaphragm and gage will not be ruptured through such careless manipulation.

When the gas within either. of the, working tanks is nearly exhausted, the pressure will fall below that under which the other tank is operating. Under these circumstances, there is danger that the gas from one tank may back up into the diaphragm chamber. This action isnormally prevented by the check valve 26; in the event of leakage 0." this valve the assage of 'gas through "the diaphragm cham or will be resisted by the valve 21. Finall should the latter valve be unscated, it Wlll be further resisted by the valve i'wherefore the gas from one source of supply cannot enter the other source of supply. Furthermore, in the event of a backfire Within the tube 28, this backfire ordinarily will not be transmitted to the diaphragm chamber because of the valve 26. However, should it happen to pass said valve, the pressure of the backfire will operate upon the diaphragm to close the valve 21 and, should any of the backfire pass the latter valve, it cannot enter the tank 1 because ofthe valve 7.

Reference has been made hereinbefore to the immunity of my regulator from freezing because of, the sudden expansion of the entering gas. This is due to the proportion of the bore 9 for each tip 9 to the pressure of the gas supplied thereto. I have found that, if said bore be made with a No. 35 standard twist drill, U. S. gage, I can operate under the maximum pressure (350 to 300 pounds) which is used with hand cutting torches with a tank pressure as high as 1800 pounds and with perfect regulation of the pressure and without causing such expansion of the gas beyond the orifice as to produce this freezing action. Should a greater working pressure he desired, I can then replace the tin 9" with one bavinga bore therethrough which is enlarged in pro portion to th pressure required for the particular operation.

It will be observed that the outlet conned tion 3 and the inlet. connection 4 are short. This places the regulator and the hose and gages connected thereto in close. proximity to the tank 1 so that there will be no danger of the latter being overturned by the weight of the parts connected thereto.

Ila ving thus describediny invention, what I claim is:

1. In a regulator, the combination of a casing having a diaphragm therein, said casing having an inlet connection and an outlet connection. a valve in the inlet connection adapted to be closed by the pressure of the gas within said casing, a valve in the outlet connection adapted to be closed by the pressure of the gas on the delivery side thereof, and a valve operatively connected with said diaphragm and controlling the supply through the inlet connection to the casing.

2. In a regulator, the combination of a.

livery side thereof, and a valve in the outlet connection adapted to be seated by the pressure of gas on the delivery side thereof.

3. In a regulator, the combination of a casing having an inlet and an outlet connection, the inlet connection being provided a with a discharge orifice through which the entering gas may be discharged into said casing, a diaphragm in said casing, a valve connected to said diaphragm and cooperating with said discharge orifice to regulate the pressure ofthe gas within said casing, a valve in said inlet connection adapted to be seated by the pressure of the gas on the delivery side thereof, a valve in the outlet connection adapted to be seated by the pressure of on the delivery side thereof, and meanswhercby the pressure at which the firstmentioued valve closed may be varied.

4. In a regulator, the combination of a casing having a diaphragm therein. a valve opcratively connected with the diaphragm to control the supply of gas to said casing, and

5. In a regulator, the combination of a. vasing having an inlet and an outlet ronnow tion. a diaphragm in said naming, a valve. operalivoly connm'ted with said diaphragm and controlling the admission of gas into said oasin said inlet mnnot-tion having a bore whicg is reduced al this delivery end thereof, a nipple detachablyconnwrted to the inlfit end of said bOlc and provided with a bore communicating with tho hornof aaid connection a vain in tho horn of said connection interposod between said nipple and the delivery portion of the last mantionud bore, and a spring operatively into!- posed between said valve and snch reduced portion of the last mentioned-bore.

6. In a regulator, the combination of a casing having an outlet connection and a gasioceiving chamber providizd with a discharge outlet, a diaphragm in said musing, a valve connected to Said diaphragm and vonti'olling said discharge outlet, :1 'alve in said gas supply connection adapted and arranged to he closed by the pressure of gas within said Chllfnifll, a pressure: raw wnznnnniiyat ing with said Cli'ltilliiti, a lJltHc-liiw gag mini mllllivating \Yliil tin wa--iing liollw-ael lln hail: diat'lialgju wltiol and the illlilt'i i'f'illl l'llllil and a valw in tho oath-i onrm-iion daptml to lie (*losod by Illa pi'e w on the (lQllYlI'jf si i'lhlt'i T. In a regulator. H t-asing having an Ulillvi willlt oi Elli) wmhjnaiion of :1 minim-lion and a Joni: nations. 

